Radiator core



Aprji121, 1931. A B MEDWLLE 1,802,263

' RADIATOR CORE Filed June 16 1928 v l a 31 2,

E ALBERT BENJAMIN MEDVILLE, OF CHICAGO, ILLINOIS, ASSIGNOR TO AUTO R.A LD]LALORk Patented Apr. 21, 1931 UNITED STATES PATENT OFFICE MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS RADIATOR CORE Application led June 16,

This invention relates to radiator cores and with regard to certain more specific features to cores of combined honeycomb and tubular construction for radiators,y condensers and analogous heat exchange apparatus.

Among the several objects of the invention may be noted the provision of a honeycomb radiator core including in its construction the provisiony for water passages of a substantially flattened'tubular nature; and the provision of a core of the class described including bafie means for effecting a more tortuous passage of air through the device, whereby the efliciency of its action is increased, said means also providing increased mechanical strength; and the provision of means of the class describedwhich may be more economically and speedily manufactured. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the elements and combinations of elements, features of construction, and arrangements of parts which will be exemplified in the structure hereinafter described, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings, in which is illustrated one ofvarious possible embodiments of the invention,

Fig. 1 is a plan view showing certain water enclosing sections laid open at an angle;

Fig. 2 is a View similar to Fig. 1 butshowing said water enclosing sections laid together and soldered.;

Fig. 3 is a cross sectiontaken on line 3-3 of Fig. 2;

Fig. 4 isa plan view of a baille sheet of the type used in this invention; and

Fig. 5 is a fragmentary front elevation of an automobile radiator showing an application of the improved core.

Similar reference characters vrindicate corresponding parts throughout the several views of the drawings.

Referring now more particularly to Fig. 1 there is illustrated at numerals 1 a pair Vof liquid or water enclosing sections adapted to be juxtaposed but said sections being shown laid open in said Fig. 1. Each sec- 1928. serial No. 285,808.

tion 1 is composed of sheets 3 and 5 of sheet metal, seamed together from front to rear at the top and bottom as shown at numerals 7 (Fig. 1). Successive sheets 3 and successive sheets 5 in juxtaposed sections 1 (sheets 3 and 5 alternate) have the same shapes at corresponding elevations. This means that all of the sheets 3 and 5 are made of the same general shape, that is, they can be made by a single shape of die. However, the shapes of the sheets 3 and 5 are such that when .pairs of sheets 3 and 5 are moved into offset relationship and juxtaposed as shown in Figs. 1 and 2, then a honeycomb effect may be produced with certain advantages to be set out hereinafter.

f Fig. 1 shows that the sheets 3 and 5 comprise integral edge strips 9 which are pressed into semi-hexagonal shapes having raised portion 11 and depressed portions 13. The strips 9 are more or less sharply and -accurately formed for purposes of nesting them together and effecting a water tight soldered 'oint. f J Between the, strips 9, each sheet 3 and 5 is provided with an integral web portion 15 comprising hollows 17 and raised portions 19 adapted to substantially follow in smooth undulating or wave fashion the angular depressed portions 13 and raised portions 11 respectively of said strips 9. Each raised portion19 is formed with a depression 21 forming a more or less fiat face which in effect cuts away the obstructing action of this respective raised portion 19. Hence when the sections `1 are put into nesting offset relationship and laid together, that is, brought from the Fig. 1 to Fig. 2 position, then more or less vertical water passages 23 are left by the aligned depressions 21 which passages permit both a vertical water movement such as is illustrated by arrows A and a tortuous movement as illustrated at arrows B. The passages 23 comprise the substantially flattened tubular water passages referred to above. The soldered strips 9 yprevent escape of liquid. It may be noted that the nesting of the strips 9 does not effect the formation of complete hexagonal shapes (see Fig. 1).

In order to provide air passages, baffles and hexagonal openings, the baiiile sheets 25 are used such as shown in Fig. 4. These sheets are made up with edge strips 27 having semihexagonal shapes which are adapted to fit between successive strips 9 so as to efllect completed hexagonal spacing or openings, such as are illustrated in Figs. 1 and 2. These strips 27 function as spacers between the sheets 3 and 5 to permit entry and exit of air.

The spacing strips 27 are joined together by means of a middle integrally formed baille sheet 29 having ridges 31 and depressions pressed in zig-zag corrugation shape thereacross. It will be noted from Fig. l that every other one of the ridges V31 are not separated from the spacing strips 27 but pa s directly into said strips by way of intermet. ate depressed portion 35. On the other hand, the remaining portions of the baille sheet 29 have been separated from the spacing strips 27 in the forming operation. The lines of separation form openings or piercings 37 permitting entry of air from the honeycomb to the zig-zag portion. The purpose of the intermediate depressions 35 is to provide means for deflecting air from the loneycombs into the respective channels or depressions 33 so that said air will be constrained to move tortuously and sweep out the heat which radiates from the baille sheet and the water tube sheets 3 and 5. These depressions 37 also serve as locating female members for coactin g with the raised portions 19. Thus proper alignment between the sections 1 and the ir.- terleaved bale sheets 25 is effected and maintained. The heat in the baille sheets absorbed therein by conduction. The tortuous zig-zag nature of the baiille sheets has a double effect, namely to increase the radiating surfaces of said sheets and at the same time to make more effective use of the convecting air.

Itis to be noted that the depressions 35 also cause the tortuously shaped web portions of the baille sheets to be positively spaced away from the side walls of the water tubes, thereby permitting air to get to said walls for convecting purposes.

The piercings 37 cause the air entering any hexagonal shape to split into two channels, one near each water wall. Each channel is in the desirable zigzag shape. Thus a double zigzag flow is obtained between paired hexagonal openings.

y In assembly, the water tube sheets and 5 are first assembled in pairs by means of the seams 7. The baffle sheets 25 are next slipped into position between seamed pairs of water tube sheets. Next the batlled units 3, 5, 25 are nested together as illustrated in Figs. 1 and 2. Solder is then applied in the usual manner. It will be seen that the result is an exceedingly strong radiator core having better cooling properties and which is less liable to become clogged in the water passages.

Hexagonal openings are located at the front and rear for entry and exit of air respectively with pairs of juxtaposed zigzag channels connecting the respective front and rear openings. The locating members 37 are near the edges of the baflie, thereby permitting the said desirable double-passage, vertically zigzag formation which has been missing in prior structures.

It is to be understood that the lengths of the assembled sections may or may not be as long as the radiator or device to which they are applied, the choice of unit sizes depending upon manufacturing requirements. It is also to be understood that the hexagonal shapes of the honeycomb may be changed to other shapes to form any open work, such as squares or the like, without departing from the spirit of the invenlion. The change may be made by making the edge strips 9 and 27 take other jogged contours beside semi-hexagonal ones such as shown.

By the term zigzag is herein meant a shape having a series of straight portions angularly joined. As shown in Fig. 4, three straight sections angularly joined to form a channel is preferable, although a greater or less number may be used where there is no limitation to the contrary.

From the above, it will be seen that each section of the radiator core includes a plurality of coacting units (Fig. 1), each unit comprising sheet metal outer walls 3 and 5 provided with horizontally disposed corrugations 17, 19, and intermediate sheet metal wall 25 (Fig. 4t) having corrugations 31, 33 disposed otherwise than horizontal. The corrugations of the wall 25 are inclined oppositely to one another. The corrugations on the wall 25 are of smaller amplitude and greater frequency than those on walls 3 and 5.

rlyhe invention is useful on all classes of radiators, including automobile and airplane types. The portions 21 comprise longitudinal depressions in portions of the outer walls.

In view of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained.

As many changes could be made in carrying out the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

I claim:

l. 1n a radiator core the combination of liquid enclosing sections having nested edge strips of raised and depressed form, and also having wave shaped webs joining said strips, said webs having straight aligned depressions i'n the wave shapes thereof resulting in the formation of tubular portions for at least some straight flow of liquid, the pairs of said webs and corresponding strips therefor being joined at the tops and bottoms and baffle sheets interposed between the said webs in the spaces which do not carry water.

2. In a radiator core the combination of liquid enclosing sections having nested edge strips of hexagonal form, wave shaped webs joining said strips, said webs having depressions in the wave shapes thereof resulting in the formation of tubular portions for liquid, the pairs of said webs and corresponding strips therefor being joined at the tops and bottoms and baiilesheets interposed between the said webs in the spaces which do not carry water, edge strips on the baiiie adapted to space the nested edge strips and corrugations on the battles running laterally of the liquid tubes, the corrugations joining with the edge strips and openings to each side of the corrugations at a given point.

3. In a radiator core the combination of liquid enclosing sections having nested edge strips of hexagonal form, wave shaped webs joining said strips, said webs having depressions in the wave shapes thereof resulting in the formation of tubular portions for liquid, the pairs of said webs and corresponding strips therefor being joined at the tops and bottoms and baflie sheets interposed between the said webs in the spaces which do not carry water, edge strips on the baffles adapted to space the nested edge strips and corrugations on the baiiies running laterally of the liquid tubes, the corrugations joining with the edge strips and beino spaced from the liquid enclosing sections.

4. In a radiator core, water-holding walls comprising sheets, bafiies between sheets forming therewith pairs of front and rear openings, corrugations in baffles from front to rear, means at the ends of the corrugations permitting a double flow of air between members of a pair of openings, said lastnamed means comprisingpiercings in the ends of the said corrugations and means for locating juxtaposed bales and sheets located endwise of the corrugations. V

5. In a radiator core, water-holding sections comprising similar sheets, dissimilar baflies between sheets adapted to form pairs of front and rear air inlet and outlet open ings with said sheets, said bafies each being formed with corrugations zigzagged with at least three straightportions from front to rear between said openings, piercings at the ends of said corrugations permitting a double Adow of air between openings and means for properly locating juxtaposed baiiies and sheets located endwise of the corrugations.

6. A radiator unit comprising, sheet metal outer walls provided with corrugations disposed in one direction, an intermediate sheet metal wall having corrugations disposed in another direction, the walls of said last named corrugations being broken to form air passages therethrough, and means adjacent the corrugated edges of said walls for positioning the intermediate wall between v the outer walls.

7 A radiator unit comprising, sheet metal outer walls provided with horizontally disposed corrugations, an intermediate sheet metal wall having inclined corrugations, the walls of certain of said last named corrugations being broken to form air passages therethrough, and means adjacent the corrugated edges of said walls for positioning the intermediate wall between the outer walls. l

8. A radiator unit comprising, sheet metal outer walls provided with horizontally disposed corrugations, an intermediate sheet metal wall having corrugations inclined in opposite directions, the walls of certain of said last named corrugations being broken to form air passages therethrough, and means adjacent the corrugated edges of said walls for positioning the intermediate wail between the outer walls.

9. A radiator unit comprising, sheet metal outer walls provided with corrugations of a predetermined amplitude and frequency and disposed in one direction, and an intermediate sheet metal wall having corrugations disposed in another direction, said corrugations being of smaller amplitude and greater frequency than the first named corrugations. v

l0. A radiator unit comprising, sheet metal outer-walls provided with corrugations of a predetermined amplitude and frequency and disposed in one direction, and an interme-V diate sheet metal wall having corrugations disposed in another direction, said corruga-l tions being of smaller amplitude and greater frequency than the first named corrugations the walls of certain of said intermediate corrugations being broken to form air passages therethrough.

11. A radiator unit comprising, sheet metal outer walls provided with horizontally disposed corrugations of a predetermined am plitude and frequency, and an intermediate sheet metal wall having corrugations inclined in opposite directions, said corrugations being of smaller amplitude and greater frequency than the first named corrugations.

12. Aradiator unit comprising, sheet metal outer walls provided with horizontally disposed corrugations of a predetermined amplitude and frequency, and an intermediate sheet metal wall having corrugations inclined in opposite directions, said corrugations being of smaller amplitude and greater frequency than the first named corrugations, the walls of certain of said intermediate corrugations being broken to form air passages therethrough.

13. A radiator unit comprising, sheet metal outer walls provided with corrugations of a predetermined amplitude and frequencyY and disposed in one direction, an intermediate sheet metal wall having corrugations disposed in another direction, said corrugations being of smaller amplitude and greater frequency than the first named corrugations, and means adjacent the edges of said intermediate corrugations for positioning the intermediate wall between the outer walls.

14. A radiator unit comprising, sheet metal outer walls provided with corrugations of a predetermined amplitude and frequency and disposed in one direction, an intermediate sheet metal wall having corrugations disposed in another direction, said corrugations being of smaller amplitude and greater frequency than the first named corrl'lfjations, the walls of certain of said intermediate corrugations being broken to form air passages therethrough, and means adjacent the edges of the intermediate corrugations for positioning the intermediate wall between the outer walls.

15. A radiator unit comprising', sheet metal outer walls provided with horizontally disposed corrugations of a predetermined amplitude and frequency, an intermediate sheet metal wall having corrugations inclined in opposite directions, said corrugations being of smaller amplitude and greater frequency than the first named corrugations, and means adjacent the edges of said intermediate corrugations for positioning the intermediate wall between the outer walls.

16. A radiator unit comprising, sheet metal outer walls provided with horizontally disposed corrugations of a predetermined alnplitude and frequency, an intermediate sheet metal wall having corrugations inclined in opposite directions, said corrugations being of smaller amplitude and greater frequency than the first named corrugations, the walls of certain of said intermediate corrugations being broken to form air passages therethrough, and means adjacent the edges of the intermediate corrugations for positioning the intermediate wall between the outer walls.

17. An automobile radiator section including, a plurality of coaeting units, each of said units comprising, sheet metal outer walls provided with corrugations disposed in one direction, an intermediate sheet metal wall havingcorrugations disposed in another direction, the walls of certain of said last named corrugations being broken to form air passages therethrough, and means adjacent the corrugated edges of said walis for positioning the intermediate wall between the outer walls, portions of said outer walls of each unit being longitudinally depressed, whereby each adjacent pair of units forms a water passage therebetween.

18. An automobile radiator section including, a plurality of coaeting units, each of said units comprising, sheet metal outer walls provided with horizontally disposed corrugations, an intermediate sheet metal wall having inclined corrugations, the walls of certain of said last named corrugations being broken to form air passages therethrough, and means adjacent the corrugated edges of said walls for positioning the intermediate wall between the outer walls, portions of said outer walls of each unit being longitudinally depressed, whereby each adjacent pair of units forms a water passage therebetween.

19. An automobile radiator section including, a plurality of coacting units, each of said units comprising, sheet metal outer walls provided with horizontally disposed corrugations, an intermediate sheet lnetal wall having corrugations inclined in opposite directions, the walls of certain of said last named corrugations being broken to form air passages therethrough, and means adjacent the corrugated edges of said walls for positioning the intermediate wall between the outer walls, portions of said outer walls of each unit being longitudinally depressed, whereby each adjacent pair of units forms a water passage therebetween.

In testimony whereof, I have signed my name to this specification this 9th day of June, 1928.

ALBERT BENJAMIN MEDVILLE.

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